Why is a guy saying I only dislike him because he rejected me?

Anonymous

This guy rejected me (as in we stopped going on dates after 2 dates) 2 years ago. I thought he was okay and I got past the rejection-- that was literally years ago and it wasn't deep at all. But since being just his friend I've found out he's actually not a very nice or kind person, and he's a bit of a bully to others. I honestly felt I dodged a bullet. He was rude to my friend so I told him quite plainly that I don't like him, and told him where to go.

He said I dislike him and people have a problem with him "because I'm just resentful that he rejected me and didn't want me like I wanted him", not because he's simply a douchebag. How could he possibly think that? We only went out a few times though? Should I even try to prove that's not the case or leave it?

Why is a guy saying I only dislike him because he rejected me?
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